Clamp for withstand voltage test

Abstract

The utility model provides a clamp for withstand voltage testing, which belongs to the technical field of withstand voltage testing and comprises a support and an adjusting assembly, the adjusting assembly comprises support columns arranged at four corners of the support, lifting columns are arranged in the middles of the support columns, and a plurality of limiting assemblies are arranged in the middles of the lifting columns. The limiting assembly comprises a plurality of guide openings formed in the middle of the lifting column, limiting blocks are arranged in the middles of the guide openings, limiting springs sleeve the middles of the limiting blocks, a clamping opening is formed in one side of each supporting column, and a clamping assembly used for clamping the ceramic copper-clad plate is arranged at the top of the support. According to the utility model, the copper-clad plate can be limited after being buffered to a certain extent, so that the sufficient contact between the testing head and the copper-clad plate is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to pressure test technical field, concretely relates to a clamp for pressure test. BACKGROUND

[0002] Ceramic copper clad plate is a kind of substrate material widely used in electronic industry, with a layer of copper foil attached to ceramic substrate, with good thermal conductivity and electrical insulation.Usually as the base material of circuit board, used to support and connect electronic components.Due to the particularity of its working environment, ceramic copper clad plate needs to have certain voltage resistance performance to ensure the stability and safety of circuit.The purpose of voltage resistance test is to evaluate whether ceramic copper clad plate can maintain good insulation performance under certain voltage, to prevent the occurrence of leakage or breakdown.

[0003] The existing part of voltage resistance test clamp has the deficiency in buffering force.Specifically, these clamps either have too strong supporting force and lack proper buffering, leading to the damage of ceramic copper clad plate during testing process, or have too weak supporting force, which cannot maintain sufficient contact between ceramic copper clad plate and testing equipment, although damage is avoided, but the accuracy of testing is sacrificed.

[0004] Therefore, a new type of voltage resistance test clamp is needed, which can provide moderate buffering force to ensure sufficient contact between ceramic copper clad plate and testing equipment during testing process, thereby improving the accuracy and reliability of voltage resistance test. SUMMARY

[0005] Therefore, the utility model provides a clamp for pressure test, the utility model can make that copper clad plate obtains limit after certain buffering, to guarantee the sufficiency of contact between test head and copper clad plate.

[0006] To solve the above technical problem, the utility model provides a clamp for pressure test, including support and adjusting assembly, adjusting assembly includes the support column that is fixedly connected to the four corners of support, the middle part of support column is slidably connected with lifting column, the middle part of lifting column is provided with a plurality of limit components, limit component includes a plurality of guide ports in the middle part of lifting column, the middle part of guide port is slidably connected with limit block, limit block is cylindrical, the end close to support column of limit block is rounded, the middle part of limit block is sleeved with limit spring, one side of support column is provided with bayonet, the top of support is provided with clamping assembly for clamping ceramic copper clad plate, so that copper clad plate obtains limit after certain buffering, to guarantee the sufficiency of contact between test head and copper clad plate.

[0007] Limit component further includes the baffle that is fixedly connected to the middle part of the inner wall of guide port, the middle part of limit block is fixedly connected with the limit plate of the diameter greater than the inner diameter of baffle;That is to prevent the accidental falling or deviation of limit block during operation.

[0008] The clamping assembly comprises a supporting plate fixedly connected to the top of two adjacent lifting columns, that is, a larger supporting area is provided, and the risk of bending or damage of the copper-clad plate due to insufficient supporting area is reduced.

[0009] The adjusting assembly further comprises a lifting spring sleeved in the middle part of the lifting column, that is, the adjusting function of the lifting column is realized, and the operation process is simplified.

[0010] The clamping assembly further comprises clamping plates fixedly connected to the two sides of the support, that is, the firm clamping of the copper-clad plate during the test is ensured.

[0011] The side of the clamping plate close to the support and the top of the supporting plate are fixedly connected with anti-skid strips, that is, the friction between the clamping assembly and the copper-clad plate is increased, and the test error caused by sliding of the copper-clad plate during the test is avoided.

[0012] The connecting plates are fixedly connected between the supporting plates, the bottom of the connecting plate is fixedly connected with a plurality of guide columns, and the middle part of the guide column is slidingly connected with the middle part of the support, that is, the connection stability between the supporting plates is enhanced, and the horizontal degree and vertical degree of the copper-clad plate during the test are ensured.

[0013] To sum up, compared with the prior art, the present application has at least one of the following beneficial technical effects:

[0014] 1. The test head does not continuously push the lifting column downward, but is limited after the copper-clad plate moves downward to a certain extent, facilitating the pressure test of the copper-clad plate, and the limiting assembly can ensure that the copper-clad plate does not move downward unlimitedly and is not unlimitedly buffered, but provides a stepped buffering mechanism, so that the copper-clad plate is limited after being buffered to a certain extent, thereby ensuring the sufficiency of contact between the test head and the copper-clad plate.

[0015] 2. The connecting plate connects the two supporting plates together, sufficiently supports the middle part of the copper-clad plate, and prevents the copper-clad plate from being twisted or deformed during the test. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a structural schematic view of the clamp for pressure test of the utility model;

[0017] Figure 2 It is a structural schematic view of the limiting assembly of the utility model;

[0018] Figure 3 It is a structural schematic view of the enlarged A of the utility model;

[0019] Figure 4 It is a structural schematic view of the utility model from the bottom.

[0020] MARKING DESCRIPTION:

[0021] 100. Bracket; 101. Anti-slip strip; 102. Guide post;

[0022] 200. Adjustment component; 201. Support column; 202. Lifting column; 203. Lifting spring;

[0023] 300. Limiting component; 301. Guide port; 302. Limiting block; 303. Limiting spring; 304. Bayonet; 305. Baffle; 306. Limiting plate;

[0024] 400. Clamping assembly; 401. Pallet; 402. Clamping plate; 403. Connecting plate; Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the following will be described in conjunction with the accompanying drawings of the embodiments of this utility model. Figures 1-4 The technical solutions of the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model are within the protection scope of this utility model.

[0026] like Figures 1-4 As shown: This embodiment provides a pressure resistance test fixture, including a bracket 100 and an adjustment assembly 200. The adjustment assembly 200 includes support columns 201 fixedly connected to the four corners of the bracket 100. A lifting column 202 is slidably connected to the center of each support column 201. Multiple limiting components 300 are provided in the center of each lifting column 202. Each limiting component 300 includes multiple guide openings 301 opened in the center of the lifting column 202. A limiting block 302 is slidably connected to the center of each guide opening 301. All limiting blocks 302 are cylindrical. The end of the limiting block 302 near the support column 201 is rounded. The middle of the limiting block 302 is fitted with a limiting spring 303. The support column 201 is provided with a bayonet 304 on one side. The bayonet 304 is arc-shaped. The side with the smaller opening of the bayonet 304 faces away from the support column 201, and the side with the larger opening of the bayonet 304 faces the adjacent lifting column 202. The arc of the bayonet 304 is consistent with the arc of one end of the limiting block 302. The top of the lifting column 202 is provided with a clamping component 400 for clamping the ceramic copper-clad plate.

[0027] Before the pressure test, the copper-clad plate is clamped by the clamping assembly 400, at this time the lifting column 202 provides the bottom support for the copper-clad plate, and the limiting block 302 is located in the bayonet 304 to limit the lifting column 202. When the pressure test is performed, the test head will contact the top of the copper-clad plate as the test head is pressed down, at this time, the pressure on the top of the copper-clad plate will be transmitted to the lifting column 202, and then acts on the limiting block 302. Since the connecting part of the limiting block 302 and the bayonet 304 is arc-shaped, the limiting block 302 will be separated from the bayonet 304 when it is subjected to excessive downward pressure, so that the lifting column 202 can move downward under the pressure of the test head. In addition, the limiting block 302 can also be separated from the bayonet 304 by pressing the limiting block 302 from the side of the smaller opening of the bayonet 304. In this process, the limiting block 302 separated from the bayonet 304 will move into the guide port 301, compressing the limiting spring 303 to avoid excessive contact between the top copper-clad plate and the test head. When the copper-clad plate is subjected to excessive pressure, it provides a protection mechanism to effectively prevent the ceramic copper-clad plate from being damaged during the test.

[0028] With the continuous downward movement of the lifting column 202, another set of limiting assemblies 300 located in the middle of the lifting column 202 above the bayonet 304 will continue to move downward until the limiting assembly 300 is flush with the bayonet 304. At this time, the limiting block 302 in the limiting assembly 300 corresponds to the position of the bayonet 304, loses the limiting, the limiting spring 303 is stretched, and the limiting block 302 is pushed into the bayonet 304. In this way, the limiting assembly 300 provides limiting for the lifting column 202 again, avoiding excessive downward movement of the lifting column 202, thereby limiting the further downward movement of the copper-clad plate. In this way, the copper-clad plate is ensured to remain in a relatively stable position, so that the test head will not continuously push the lifting column 202 downward, but will be limited after the copper-clad plate moves downward to a certain extent, facilitating the pressure test of the copper-clad plate. Through the limiting assembly 300, it can be ensured that the copper-clad plate will not move downward unlimitedly and will not be unlimitedly buffered, but a stepped buffering mechanism is provided, so that the copper-clad plate is limited after being buffered to a certain extent, thereby ensuring the sufficiency of the contact between the test head and the copper-clad plate.

[0029] As shown in Figure 2 , 3 ,

[0030] The limiting assembly 300 further includes a baffle 305 fixedly connected to the middle of the inner wall of the guide port 301. The middle part of the limiting block 302 is fixedly connected with a limiting plate 306 having a diameter larger than the inner diameter of the baffle 305, and the inner diameter of the baffle 305 is smaller than the diameter of the limiting block 302.

[0031] When a set of limiting components 300 is in contact with the card hole 304, the limiting spring 303 will provide a continuous pushing force to the limiting plate 306, so that the limiting force of the limiting component 300 is guaranteed and will not be easily lost.

[0032] When a set of limiting components 300 is not in contact with the card hole 304, the limiting block 302 is deeper in the guide hole 301, and at the same time it will also drive the push plate to move, thereby compressing the limiting spring 303. At this time, the limiting spring 303 is in a compressed state. When this set of limiting components 300 is lowered or raised to the card hole 304, the limiting block 302 loses the limiting, and the limiting spring 303 will be released, pushing the push plate to drive the limiting block 302 to move and insert into the card hole 304, and the baffle 305 avoids the excessive movement of the push plate and the strong collision with the card hole 304, thereby avoiding damage.

[0033] The supporting plate 401 is as shown in Figure 1 , 4

[0034] The clamping assembly 400 includes a supporting plate 401 fixedly connected to the top of two adjacent lifting columns 202. The supporting plate 401 is two;

[0035] The supporting plate 401 can provide a larger supporting surface for the copper-clad plate, and at the same time can make the lifting columns 202 located in the same supporting plate 401 move synchronously, avoiding the asynchronous movement to cause tilting and the like.

[0036] The lifting spring 203 is as shown in Figure 1 , 2 , 4,

[0037] The adjusting assembly 200 further includes a lifting spring 203 sleeved in the middle part of the lifting column 202. The diameter of the lifting spring 203 is smaller than the width of the supporting plate 401;

[0038] When the copper-clad plate is arranged on the top of the supporting plate 401, the lifting spring 203 is lifted to a certain height, and the limiting block 302 is inserted into the adjacent card hole 304, without manually pulling up the lifting column 202.

[0039] The clamping plate 402 is as shown in Figure 1 , 4

[0040] The clamping assembly 400 further includes clamping plates 402 fixedly connected to the two sides of the bracket 100. The top of the clamping plate 402 is higher than the top of the supporting plate 401;

[0041] When the lifting column 202 is pushed up by the lifting spring 203, the copper-clad plate is clamped by the supporting plate 401 and the clamping plate 402 when the lifting column 202 drives the supporting plate 401.

[0042] The anti-skid strip 101 is as shown in​​Figure 1 、 4 As shown in

[0043] The side close to the support 100 of the clamping plate 402 and the top of the supporting plate 401 are fixedly connected with anti-skid strips 101, and the anti-skid strips 101 are all made of rubber material;

[0044] The anti-skid strips 101 can improve the friction between the clamping assembly 400 and the ceramic copper-clad plate, and prevent the copper-clad plate from slipping during the test. The rubber material of the anti-skid strips 101 has good elasticity and wear resistance, and can provide stable gripping force when clamping the copper-clad plate, while reducing damage to the surface of the copper-clad plate.

[0045] The connecting plate 403 is fixedly connected between the supporting plates 401, and the top of the connecting plate 403 is horizontal with the top of the supporting plate 401, and the bottom of the connecting plate 403 is fixedly connected with a plurality of guide columns 102, and the middle part of the guide columns 102 is slidingly connected with the middle part of the support 100. Figure 1 、 4 As shown in

[0046] The connecting plate 403 is fixedly connected between the supporting plates 401, and the top of the connecting plate 403 is horizontal with the top of the supporting plate 401, and the bottom of the connecting plate 403 is fixedly connected with a plurality of guide columns 102, and the middle part of the guide columns 102 is slidingly connected with the middle part of the support 100.

[0047] The connecting plate 403 can further improve the stability of the supporting plate 401 and the clamping assembly 400. The connecting plate 403 connects the two supporting plates 401 together, and also provides sufficient support to the middle part of the copper-clad plate, preventing the copper-clad plate from twisting or deforming during the test. The guide columns 102 can guide the vertical movement of the supporting plate 401 and the copper-clad plate, ensuring the accurate position of the copper-clad plate during the test.

[0048] Working principle:

[0049] Firstly, the ceramic copper-clad plate is fixed on the supporting plate by the clamping assembly, and the supporting plate is located at the top of the lifting column to provide support for the copper-clad plate. The one end of the limiting block with a rounded corner is located in the arc-shaped notch on the side of the support column to initially limit the lifting column. The test head is pressed down to contact the copper-clad plate. The pressure on the top of the copper-clad plate is transmitted to the limiting block through the lifting column. When the pressure on the copper-clad plate exceeds a certain limit, the limiting block is separated from the notch, and the lifting column descends under the pressure of the test head. The limiting block moves into the guide port, compressing the limiting spring. As the lifting column descends, the other limiting assembly continues to move downward until it is flush with the notch. At this time, the limiting block corresponds to the position of the notch, and the limiting spring pushes the limiting block into the notch to provide re-limiting for the lifting column. Through this step-by-step buffering mechanism, the copper-clad plate is limited after being buffered to a certain extent, ensuring sufficient contact between the test head and the copper-clad plate, while preventing the copper-clad plate from moving downward without limit.

[0050] In addition, it needs to be explained that, in the description of the present application, unless otherwise specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0051] The above is the preferred embodiment of the present application, it should be pointed out that, for those skilled in the art, without departing from the principles described in the present application, a number of improvements and refinements can be made, these improvements and refinements should also be considered as the protection scope of the present application.

Claims

1. A clamp for pressure testing, characterized by: Including support (100) and adjusting assembly (200), the adjusting assembly (200) includes the support (100) four corners and is arranged support (201), the middle part of support (201) is provided with lifting column (202), the middle part of lifting column (202) is provided with multiple limiting assemblies (300), the limiting assembly (300) includes multiple guide ports (301) in the middle part of lifting column (202), the middle part of guide port (301) is provided with limiting block (302), the middle part of limiting block (302) is provided with limiting spring (303), the side of support (201) is provided with bayonet (304), the top of support (100) is provided with clamping assembly (400) for clamping ceramic copper-clad plate.

2. The clamp for voltage withstanding test according to claim 1, wherein: The limiting assembly (300) further includes a baffle (305) disposed in the middle of the guide port (301), and the middle of the limiting block (302) is provided with a limiting plate (306) with a diameter greater than the inner diameter of the baffle (305).

3. The clamp for voltage withstanding test according to claim 2, wherein: The clamping assembly (400) includes a supporting plate (401) disposed on the top of two adjacent lifting columns (202).

4. The clamp for voltage withstanding test according to claim 3, wherein: The adjusting assembly (200) further includes a lifting spring (203) disposed in the middle of the lifting column (202).

5. The clamp for voltage withstanding test according to claim 3, wherein: The clamping assembly (400) further includes a clamping plate (402) disposed on both sides of the support (100).

6. A clamp for voltage withstanding test according to claim 5, wherein: The side of the clamping plate (402) and the top of the supporting plate (401) are provided with anti-skid strips (101).

7. The clamp for voltage withstanding test according to claim 3, wherein: The supporting plate (401) is provided with a connecting plate (403) between the supporting plate (401), and the bottom of the connecting plate (403) is provided with multiple guide columns (102), and the middle of the guide column (102) is provided in the middle of the support (100).

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